64% (1993)

76% (2000)

78% (2010)

34% (2010)

76% (2009)

71% (1998)

73% (2002)

74% (2004)

69% (2001)

77% (1993)

64% (1999)

82% (1999)

76% (1994)

71% (1998)

73% (1996)

69% (2000)

73% (2003)

69% (2010)

66% (1996)

67% (2000)